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Finding the Fourth Proportional to 12,018.78, 16,579.62 and 7,534.08

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Solution

The fourth proportional to 12,018.78, 16,579.62 and 7,534.08 is: 10,393.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,018.78 : 16,579.62 = 7,534.08 : x
  2. Step 2: Convert to fraction form
    12,018.78/16,579.62 = 7,534.08/x
  3. Step 3: Cross multiply
    12,018.78x = 16,579.62 × 7,534.08
  4. Step 4: Simplify right side
    12,018.78x = 124,912,183.45
  5. Step 5: Solve for x
    x = 124,912,183.45/12,018.78
  6. Step 6: Final answer
    x = 10,393.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.